Fisheries and Oceans Canada * Pêches et Océans Canada Canada
Français CHS HQ Water Levels Canada Site
CHS crest       The Canadian Hydrographic Service
      Central and Arctic Region

Historical Monthly and Yearly Mean Water Level Graphs 1918-2013


Computed from Coordinated Network Mean Water Levels

A network of gauging stations on both sides of the border on each lake is used to determine the average water level for the month. The following stations are used:

Lake Superior at:  Thunder Bay, Michipicoten, Duluth, Marquette and Point Iroquois  

Lakes Michigan/Huron at:  Thessalon, Tobermory, Milwaukee, Ludington, Mackinaw City and Harbor Beach  

Lake St. Clair at:  Belle River and St. Clair Shores

Lake Erie at:  Port Stanley, Port Colborne, Toledo and Fairport           

Lake Ontario at:  Port Weller, Toronto, Cobourg, Kingston, Rochester and Oswego          


Graphs of Network Mean Water Levels


Last Updated: 01/22/2014

Important Notices


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